The Hangout Music Fest has just announced on their FB page that Stevie Wonder, Yeah Yeah Yeahs, Macklemore x Ryan Lewis, Imagine Dragons, Afrojack, Big Gigantic, Holy Ghost!, Baauer, Ra Ra Riot and The Wild Feathers have been added to the lineup! Check out the full slate here. The announcement of another big ticket headliner rounds out the top line of the bill alongside Tom Petty and the Heartbreakers and Kings of Leon and clarifies the previously-blurry picture up top. Check out our initial artist announcement post here.